<template>
  <div class="cartcontrol">
    <transition name="move">
      <!-- 因为点击列表的时候，会有详情页，所以要给按钮添加阻止冒泡 -->
      <div class="cart-decrease" v-show="food.count > 0" @click.stop="decrease">
        <span class="inner icon-remove_circle_outline"></span>
      </div>
    </transition>
    <div class="cart-count" v-show="food.count > 0">{{ food.count }}</div>
    <!-- 因为点击列表的时候，会有详情页，所以要给按钮添加阻止冒泡 -->
    <div class="cart-add icon-add_circle" @click.stop="add"></div>
  </div>
</template>
<script>
const EVENT_ADD = "add";
export default {
  name: "CartControl",
  props: {
    food: {
      type: Object,
    },
  },
  methods: {
    add(event) {
      if (!this.food.count) {
        this.$set(this.food, "count", 1);
      } else {
        this.food.count++;
      }
      this.$emit(EVENT_ADD, event.target);
    },
    decrease() {
      if (this.food.count) {
        this.food.count--;
      }
    },
  },
};
</script>
<style lang="stylus" scoped>
@import '~assets/stylus/variable'
.cartcontrol
  display flex
  align-items center
  .cart-decrease
    display inline-block
    padding 6px
    opacity 1
    .inner
      display inline-block
      line-height 24px
      font-size $fontsize-large-xxx
      color $color-blue
      transition all 0.4s linear
      transform rotate(0)
    &.move-enter-active, &.move-leave-active
      transition all 0.4s linear
    &.move-enter, &.move-leave-active
      opacity 0
      transform translate3d(24px, 0, 0)
      .inner
        transform rotate(180deg)
  .cart-count
    width 12px
    line-height 24px
    text-align center
    font-size $fontsize-small-s
    color $color-grey
  .cart-add
    display inline-block
    padding 6px
    line-height 24px
    font-size $fontsize-large-xxx
    color $color-blue
</style>